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-Inith tattre gleitet @frn JOI-IAN ASHCROFT; OF NEIV YORK, N. Y.

Letters Patent No. 65,463, dated.' Juize 4, 1867.1

IMPROVEMENT IN STEAM-ENGINE LUBRIGATORS.

@dige Segnale nennt tu in tigtst fritas ntnxt mit mating nrt nf tigesmut.

T() ALL WHOM IT MAY GONGERN:

Be it known that I, JOHN ASHCROFT, of New York, in the county and Stateof New York, have `invented certain new and useful Improvements inLnbricators for Steam Engines; and I do hereby declare that thefollowing is a full, clear, and exact description ofthe same, referencebeing had to the accompanying drawings, in which- Figure 1 is a verticalsection of my improved lubricator; and

Figure 2, an elevation of the same.

'Ihe nature of my invention consists in so constrnctingji` a lnbricatorthat the cover may, for convenience, be easily removed for the admissionot` oil or tallow, thereby savingr time and trouble, as tallow cannot belised in the ordinary oil-cup, the openings being too small to admit,except in a molten state. To effect this object I so arrange the coverthat it may be instantly removed and the full area of the cup exposed,and as readily replaced, forming a steam-joint, as shown in thedrawings.

To enable others to make and use my invention, I will non' proceed todescribe my invention, its construction and operation, by reference tothe accompanying drawings.

A H represents the interior of cup and valw-eha11iber, the valve Kclosing the steam passage when the cover is removed; B is the cover; ea, a ring of soft metal or India rubber, on which the conicaly tlange bb seats itself, being held in place by the nibfand pointof screwf onscrew 0,- which it into they recess G; d d is a boss cust on the cover,through which enters the screw e, provided with a wheel, L, on its outerend, by means ofwhich the screw is rotated. When the cover is in place7and the wheel rotated from left to right, the point of screwf and niof,actinfcr upon the inclines, immediately above thc recess G, causes thecover to be drawn down and the flange I to press tightly against therubber or other packingl C, forming a. steam-tight joint. When the coveris to be removed, the wheel L is rotated in the opposite direction,releasing the nibf and point oi' screwf, and allowing them to pass overthe projection at the top of the cup. The boss c1 d, by making the coverb Z1 thick enough, can bc screwed and swet in.

Having thusdescrihed my invention, what I claim as new, and desire tosecure by Letters Patent is 1. The lid or cover B, constructed andoperating in the manner substantially as shown and described, and forthe purpose set forth.

2. The combination of cover B and cup A constructed, arranged, andoperating in the manner substantially as shown and described, and forthe purpose set forth.

J. ASIIOROFT. Witnesses-r Si. S. FAHNESTOGK, Tnnononn LANG.

